What problem does it solve? Lens Studio physics bugs usually come from skipping one of the three layers (world, body/collider, constraint) or from undocumented behaviors like read-only default world settings, hollow mesh colliders, and hinge axes defaulting to local Y. This Skill encodes the correct setup rules, API surface, and debugging recipes so physics scenes work the first time. ## Core Features & Use Cases - Three-layer setup model: Configure WorldSettingsAsset (gravity, simulation rate, Ground Is Zero), BodyComponent/ColliderComponent (shapes, matter, filters), and ConstraintComponent (Fixed/Point/Hinge) with the correct wiring order. - Collider fitting recipes: Bbox-driven measurement, pivot-wrapper pattern for off-center meshes, shape selection rules (cylinder vs capsule for upright objects), and skinned-mesh colliders for face/hand/world mesh AR physics. - Pattern library: Eleven composable patterns including drag-to-move, trigger zones, continuous force fields, ragdoll chains, compound bodies, and multi-world slow-mo setups. - Use Case: A user asks to make a bowling game where the ball launches on tap and knocks over pins. The Skill provides the VelocityChange launch pattern, cylinder-shaped pins (not capsules), simulationRate raised to 120 to prevent tunneling, and multiplicative matter settings so bounces actually work. ## Quick Start Ask the agent to add a dynamic physics body to an existing mesh in your Lens Studio project and make it launch upward when the screen is tapped.